Vintage Computer Forum - Tandy/Radio Shackhttp://www.vcfed.org/forum/
Discussions about the Tandy/TRS-80 line of computers from the Model I on up.enFri, 18 Aug 2017 03:13:17 GMTvBulletin60http://www.vcfed.org/forum/images/misc/rss.pngVintage Computer Forum - Tandy/Radio Shackhttp://www.vcfed.org/forum/
Double-sided drives in a Model 4http://www.vcfed.org/forum/showthread.php?59179-Double-sided-drives-in-a-Model-4&goto=newpost
Tue, 15 Aug 2017 04:34:26 GMTIn preparation for my FreHD and HxC I'm trying to get my DS 80-track drives working again. I've cleaned the drives I was using and since I don't want to risk my archives I've been using blank floppies to test and have installed a TM100-1A as the boot drive for testing. I've using a copy of LS-DOS 6.3.1.

I can format the floppies in the 80-track drives single-sided without any problem, but trying to format double-sided fails when verifying. It's been a while so I don't remember having to do any patching to LS-DOS and searching the web doesn't reveal anything I'm missing.

The drives are a TEAC FD55-GFR-140-U and a Mitsubishi M4853.

Any ideas?
]]>Tandy/Radio ShackAlphasitehttp://www.vcfed.org/forum/showthread.php?59179-Double-sided-drives-in-a-Model-4Model 4 keyboardhttp://www.vcfed.org/forum/showthread.php?59163-Model-4-keyboard&goto=newpost
Sun, 13 Aug 2017 22:53:46 GMTI took apart my Model 4 for a good cleaning. I removed the keyboard and found that it's sealed on the back and part of the seal on one end has come loose, so a couple of springs have popped out. I can't see any way to open it up other than breaking the melted plastic nubs off that are keeping the rest of the bottom on. And after that there's the matter of being able to close it up again.

Any suggestions or does anyone have a good Model 4 GA keyboard for sale?
]]>Tandy/Radio ShackAlphasitehttp://www.vcfed.org/forum/showthread.php?59163-Model-4-keyboardLo-tech site down ?http://www.vcfed.org/forum/showthread.php?59154-Lo-tech-site-down&goto=newpost
Sat, 12 Aug 2017 18:41:30 GMTI get a security error if I try to access the Lo-tech site.
www.lo-tech.co.uk
Anybody else too?I get a security error if I try to access the Lo-tech site.www.lo-tech.co.uk
Anybody else too?
]]>Tandy/Radio ShackHans01http://www.vcfed.org/forum/showthread.php?59154-Lo-tech-site-downHxC floppy emulatorhttp://www.vcfed.org/forum/showthread.php?59141-HxC-floppy-emulator&goto=newpost
Fri, 11 Aug 2017 15:53:38 GMTI think it might be a good idea to get one of these. I've seen that the Rev. C from Lotharek works okay, but I like the idea of the Rev. F with the display and controls on the front.

Has anyone tried the Rev. F with a Model I, 4, or 4P? If so did you have any issues?
]]>Tandy/Radio ShackAlphasitehttp://www.vcfed.org/forum/showthread.php?59141-HxC-floppy-emulatorModel II kbd, is my aluminum mylar shot?http://www.vcfed.org/forum/showthread.php?59127-Model-II-kbd-is-my-aluminum-mylar-shot&goto=newpost
Thu, 10 Aug 2017 19:25:28 GMTThere is very inconsistent "silvery" coverage on the mylar. From almost clear to fairly spotty. It like the foam ate the aluminum. I don't think I should bother reusing the disks.150239305891513267225.jpg
Options?

I'm going to need a few and I don't want to re-invent the wheel if there are some already out there.

Thanks
]]>Tandy/Radio ShackDruid6900http://www.vcfed.org/forum/showthread.php?59117-Model-4-128K-badgesMissing Model 4Phttp://www.vcfed.org/forum/showthread.php?59088-Missing-Model-4P&goto=newpost
Tue, 08 Aug 2017 00:10:55 GMTI bought a FreHD off eBay to use with my Model I, 4, and 4P. While I'm waiting I thought I'd dig out my 4P. I can't find it anywhere. I know I would not have thrown it out so this is puzzling.

I had modified it with two 3.5" drives and a BIOS that bypassed the sector size check so it didn't want to load the Model III ROM image on boot with my custom CP/M 2.2 and Plus. It also had the RS Hi-Res board.

I am not happy about this.

Time to hit eBay. I can't have a 4P-sized hole in my collection.
]]>Tandy/Radio ShackAlphasitehttp://www.vcfed.org/forum/showthread.php?59088-Missing-Model-4PModel 1 Lower case problemhttp://www.vcfed.org/forum/showthread.php?59068-Model-1-Lower-case-problem&goto=newpost
Mon, 07 Aug 2017 00:46:42 GMTHi,
I bought a Model 1 system on eBay recently, and it has a lower case mod.
I assume it is an Electric Pencil equivalent - but not sure.
In the...Hi,
I bought a Model 1 system on eBay recently, and it has a lower case mod.
I assume it is an Electric Pencil equivalent - but not sure.

In the auction pictures, it showed it running LDOS just fine with lower case - and considering how well the system was packed, I have no doubt the pictures are accurate.
After I received it, instead of immediately plugging it in and verifying everything, I instead decided to perform a power supply re-cap on it.
And since I had it open and it had the original interconnect cable, I just couldn't resist replacing the cable with a spare 40 pin one I had laying around.
(removed the cable and installed 20 pin RT angle headers - which the 40 pin cable plugs into)

When I was finished with the mods, I powered it up - and was greeted with a screen where all of the space characters are " ' " and other random gibberish.
It reminds me of how my original model 1 would behave in Level II BASIC when I had lower case enabled via the usual SPDT toggle switch.
This install doesn't have a toggle switch, so I was assuming it would be fine under LDOS - just like in the auction pictures.
I booted LDOS and well - no difference.
I also tried booting NewDOS 80/V2 and issued the command to enable lower case, but that made no difference either.

I tried a simply FOR-NEXT loop under BASIC to poke 0-255 into video memory and it looked reasonable, but I can't recall if the character set is supposed to repeat like I saw.
(Unfortunately it's all powered down and opened up so I can't re-do that test tonight and take a picture)

I'm pretty sure the fault is mine - but I'm not sure where to look.

If I'm doing it correctly - there should be a couple pictures attached to this post...

]]>Tandy/Radio ShackBiffhttp://www.vcfed.org/forum/showthread.php?59068-Model-1-Lower-case-problemHires-m1http://www.vcfed.org/forum/showthread.php?59024-Hires-m1&goto=newpost
Fri, 04 Aug 2017 06:01:34 GMTBonjour,
For the TRS-80 community. I have see this box, his software and his documentation on the site of Ian. I may be able to duplicate it
If you...Bonjour,
For the TRS-80 community. I have see this box, his software and his documentation on the site of Ian. I may be able to duplicate it
If you can lend me a few weeks box or give me the information (Photos of "PCB", soft documentation, schema .... etc)
thank you in advance
A+
Pascal

]]>Tandy/Radio ShackP.Hhttp://www.vcfed.org/forum/showthread.php?59024-Hires-m1http://www.vcfed.org/forum/showthread.php?59020-The-Last-quot-Branded-Tandy-quot-computer-Radio-Shack-ever-sold-(I-Think)&goto=newpost
Fri, 04 Aug 2017 00:36:49 GMTI believe this was the last "Branded" Tandy computer Radio Shack ever sold. My "Inside The Tandy" Series, part two of the MMPC Model 10. See it here:

https://www.youtube.com/watch?v=Tb7k...acvykbk0h00410
]]>Tandy/Radio ShackHavochttp://www.vcfed.org/forum/showthread.php?59020-The-Last-quot-Branded-Tandy-quot-computer-Radio-Shack-ever-sold-(I-Think)40 years of TRS-80 todayhttp://www.vcfed.org/forum/showthread.php?59011-40-years-of-TRS-80-today&goto=newpost
Thu, 03 Aug 2017 17:09:32 GMTA small celebration today, on this day in 1977 Radio Shack introduced the TRS-80 to the public in the Warwick Hotel in NY. The first introduction was...A small celebration today, on this day in 1977 Radio Shack introduced the TRS-80 to the public in the Warwick Hotel in NY. The first introduction was overseen by the press, largely by a bomb alarm in a nearby premise, but after a few days the word spread and Tandy was flooded with questions and orders. The rest is history ;-)
Time to fire up my Model I tonight...

Bart
]]>Tandy/Radio ShackBartHhttp://www.vcfed.org/forum/showthread.php?59011-40-years-of-TRS-80-todayTandy Model 16http://www.vcfed.org/forum/showthread.php?58993-Tandy-Model-16&goto=newpost
Wed, 02 Aug 2017 01:08:37 GMTOh man, how did I miss this. $150 for a Tandy 16 XENIX complete system. These were TRS-80 Model 16s rebadged and intended to be sold by resellers. ...Oh man, how did I miss this. $150 for a Tandy 16 XENIX complete system. These were TRS-80 Model 16s rebadged and intended to be sold by resellers. Extremely rare.

]]>Tandy/Radio Shackpskihttp://www.vcfed.org/forum/showthread.php?58993-Tandy-Model-16Model 16 repair in the UShttp://www.vcfed.org/forum/showthread.php?58979-Model-16-repair-in-the-US&goto=newpost
Tue, 01 Aug 2017 02:31:06 GMTI have rescued a Model 16 (I was told it was a 12, so being a 16 is a bonus).

It's in need of a strip-down, cleaning, and repair. With other projects I have going on I don't have time right now, so I thought I might be able to find someone that has experience with the 16 that offers a repair service. Does anyone know of anyone that does Model 16 repairs in the US? It would be a bonus if the person was in the DFW area to save on shipping.

I'm mainly a Model I and 4 person but couldn't pass up one of their big brothers. I'd leave it for repairing later but I don't think I'd get to it any time soon.
]]>Tandy/Radio ShackAlphasitehttp://www.vcfed.org/forum/showthread.php?58979-Model-16-repair-in-the-USInside The Tandy Serieshttp://www.vcfed.org/forum/showthread.php?58972-Inside-The-Tandy-Series&goto=newpost
Mon, 31 Jul 2017 21:46:56 GMTMy "Inside the Tandy" series focuses on the MMPC Model 10, See it here:

https://www.youtube.com/watch?v=X3T_HgzDOqA
]]>Tandy/Radio ShackHavochttp://www.vcfed.org/forum/showthread.php?58972-Inside-The-Tandy-SeriesTandy 1000 sx and tx high density driveshttp://www.vcfed.org/forum/showthread.php?58956-Tandy-1000-sx-and-tx-high-density-drives&goto=newpost
Sun, 30 Jul 2017 20:27:10 GMTI was always under the impression that you couldn't put high density drives in the 1000 sx and tx. Until now!!! I did some research and found if you buy a compati card II then it was possible to get the high density drives to work. So for months I was on ebay looking for a compati card and not one for $1399.99 either. I found it listed under Micro solutions board, paid 60 bucks for it and couldn't wait till it arrived. I got it yesterday and today followed all the instructions I gathered and it works. I used a duel floppy combo and the only problem is that the 5.25 only reads high density, the 3.5 reads both, so I just slapped the 5.25 360 that I took out, back in and used the on board floppy controller, kept the dip to "on" and I now I have 3 working drives. the bottom one just reads 360's while the 3.5 like I said reads both and the other part of the duel reads just High density.. I have a silicon valley hdd controller ADP-50L that I will now try to install a 120 gig hard drive in my TX...

So if someone knows why I cant read the dsdd disks on the 5.25 but I can on the 3.5 please let me know. Also, they dont boot up when the computer turns on, in fact it states that drive E is the 5.25 1.2 meg and the F drive is 3.5 1.44 meg.